<template>
  <div class="head-container">
    <el-input v-model="deptName" class="mb-20px" clearable placeholder="请输入部门名称">
      <template #prefix>
        <Icon icon="ep:search" />
      </template>
    </el-input>
  </div>
  <div class="head-container">
    <el-tree
      ref="treeRef"
      :data="deptList"
      :expand-on-click-node="false"
      :filter-node-method="filterNode"
      :props="defaultProps"
      default-expand-all
      highlight-current
      node-key="id"
      @node-click="handleNodeClick"
    />
  </div>
</template>

<script lang="ts" setup>
import { ElTree } from 'element-plus';
import * as DeptApi from '@/api/system/dept';
import { defaultProps, handleTree } from '@/utils/tree';

defineOptions({ name: 'SystemUserDeptTree' });

const deptName = ref('');
const deptList = ref<Tree[]>([]); // 树形结构
const treeRef = ref<InstanceType<typeof ElTree>>();

/** 获得部门树 */
const getTree = async () => {
  const res = await DeptApi.getSimpleDeptList();
  deptList.value = [];
  deptList.value.push(...handleTree(res));
};

/** 基于名字过滤 */
const filterNode = (name: string, data: Tree) => {
  if (!name) return true;
  return data.name.includes(name);
};

/** 处理部门被点击 */
const handleNodeClick = async (row: { [key: string]: any }) => {
  emits('node-click', row);
};
const emits = defineEmits(['node-click']);

/** 监听deptName */
watch(deptName, (val) => {
  treeRef.value!.filter(val);
});

/** 初始化 */
onMounted(async () => {
  await getTree();
});
</script>
